Tree stand



FIG. 1 is a perspective view of the tree stand;

FIG. 2 is a top view of the tree stand;

FIG. 3 is a side view taken from the right side of FIG. 2;

FIG. 4 is a side view taken from the bottom of FIG. 2;

FIG. 5 is a side view taken from the left side of FIG. 2; and,

FIG. 6 is a bottom view of FIG. 4. 

We claim the ornamental design for a tree stand, as shown. 